cp /opt/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora /opt/app/oracle/product/11.2.0/dbhome_1/network/admin/tnsnames.ora
然后在服务器里面用sys登陆sqlplus,执行下面三条语句
alter system set local_listener=listener;
set lines 120
show parameter local_listener